CVE-2021-47455
- Source
- https://cve.org/CVERecord?id=CVE-2021-47455
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47455.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-47455
- Downstream
- Related
- Published
- 2024-05-22T07:15:10Z
- Modified
- 2026-03-13T05:20:46Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ptp: Fix possible memory leak in ptp_clock_register()
I got memory leak as follows when doing fault injection test:
unreferenced object 0xffff88800906c618 (size 8): comm "i2c-idt82p33931", pid 4421, jiffies 4294948083 (age 13.188s) hex dump (first 8 bytes): 70 74 70 30 00 00 00 00 ptp0.... backtrace: [<00000000312ed458>] __kmalloc_track_caller+0x19f/0x3a0 [<0000000079f6e2ff>] kvasprintf+0xb5/0x150 [<0000000026aae54f>] kvasprintf_const+0x60/0x190 [<00000000f323a5f7>] kobject_set_name_vargs+0x56/0x150 [<000000004e35abdd>] dev_set_name+0xc0/0x100 [<00000000f20cfe25>] ptp_clock_register+0x9f4/0xd30 [ptp] [<000000008bb9f0de>] idt82p33_probe.cold+0x8b6/0x1561 [ptp_idt82p33]
When posix_clock_register() returns an error, the name allocated in dev_set_name() will be leaked, the put_device() should be used to give up the device reference, then the name will be freed in kobject_cleanup() and other memory will be freed in ptp_clock_release().
- References
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47455.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "3.16.83"
},
{
"fixed": "3.17"
}
]
},
{
"events": [
{
"introduced": "4.4.224"
},
{
"fixed": "4.5"
}
]
},
{
"events": [
{
"introduced": "4.9.224"
},
{
"fixed": "4.10"
}
]
},
{
"events": [
{
"introduced": "4.14.162"
},
{
"fixed": "4.15"
}
]
},
{
"events": [
{
"introduced": "4.19.93"
},
{
"fixed": "4.20"
}
]
},
{
"events": [
{
"introduced": "5.4.8"
},
{
"fixed": "5.14.15"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc1"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc2"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc3"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc4"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc5"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "5.15-rc6"
}
]
}
]